Vulcanizer.



1. E. BANCROFT.

Patented June 1, 1915.

3 SHEETS-SHEET I.

J. E. BANCROFT.

'VULCANIZER] APPLICATION FILED JULY 5,1910

1,141,5 1 9. Patented June 1, 1915.

3 SHEETS-SHEET 2.

J. E. BANCROFT.

VULCANIZER.

APPLICATION FILED JULV 5,1910.

Patented June 1, 1915.

3 SHEETS-SHEET 3- UNITED STATES PATENT OFFICE.

JAMES E. BANGROFT, OF TOLEDO, OHIO, ASSIGNOR TO TOLEDO COMPUTING SCALE COMIANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

vULcANIzEn.

Specification of Letters Patent.

Patented June 1,1915.

Application flied July 5, 1910. Serial No. 570,818

of Lucas and State of Ohio, have invented a new and useful Vulcanizer, of which the following is a specification.

This invention relates to heat applying and limiting means and a knock down clamp device.

This invention has utility when embodied in a. vulcanizer which, due to the ease and certainty of manipulation coupled with feature of small packing space required therefor, imparts special value to it as a-device to be carried especially with pneumatic tire vehicles.

The objects of my invention are accomplished as hereinafter described and illustrated in the drawings in which Figure '1 is a section through a vulcanizer constructed in accordance with my invention. showing an inner tube in position upon the thermal plate. Fig. 2 is an end elevation showing a tire or casing clamped in position upon the vuleanizer for repairs upon itstread. Fig. 3 is also an end elevation showing the clamp arms adjustable to bear at- 'an angle upon the thermal plate to vulcanize patches upon the sides of tires and showing a supplementary bearing block in terposed between the sides of the tires. Fig. 4 is a side elevation of my vulcanizer, showing an inner tube in place. Fig. 5 is an end elevation showing my vulcanizer folded. Fig. 6 is a cross section through a modified form of my vulcanizer showing the pad in end elevation. Fig. 7 is a top plan view of the base. Fig. 8 is a transvcrse'section through the base on line 91- 11: of Fig. 7.

Fig. 9 is a cross section through the base on line y*y of Fig. 7. Fig. 10 is a plan view of the top of the thermal plate. Fig. 11 Is a top view of the pad used in connection with this vulcanizer. Fig. 12 is an isometric view of the supplcmentam pressure block. Fig. 13 is adetail in section of the adjustable clamp bar. Fig. 14 is an enlarged view of the clamp arm centrally slabbcd or flattened t receive the clamp bars: Fig. 15 is a section on line 2 2 01 Fig. 4, showing the locking bars in position to engage the notches of the pressure bar casing Fig. 16 is a transverse section of an anchor member providedwith longitudinally extending tubular reservoirs; Fig. 17 is a similar view a to Fig. 16, but in which the reservoirs are spaced down in the combustion chamber from the heat conducting or thermal plate region; and Fig. 18 is a detail view showing pawl to en age the primary or reciprocable set device or the clamp.

The base A of myyvulcanizer is formed like a pan ofsome depth and has at each corner a leg 1 to provide an air space under its bottom. In the a'i'ea of said base is located a well 2, the side and end walls of which are parallel with the respective walls of the base and form conjointly with them an annular space 3 around the well. The

, cross section of the well is preferably in the form at a semi-circular trough and its side walls are so pierced with ports 4, that the outlet of said ports are disposed above the bottom 5 of the annular chamber 3 and their inlets open into the air space under the bottom of the base. The baseis further provided with a fuel duct 6 which has its inlet 7 disposed at a side of the base and has its outlet 8 located in an end wall of the well, facing the well area and being above the rim of the well walls to permit a burner B-be ing thread-coupled thereto.

The vaporizing tube 9 of the burner is thread-coupled to the outlet port 8 and extends from said port, lengthwise of and above the area of the well, over the opposite end of the base and near the opposite wall 2' of the well, said vaporizing tube is provided with a valve seat 10 and a valve 11 which is controllable from the outside of the base. The vaporizing tube has alsoan integral drop section 12 located in the outside of the valve seat, and -from said drop section 12 is extended a perforated burner tube section 13, which is located .withinthe well area, under the rim of its wall and is parallel with the vaporizing tube 9. In the space between the vaporizing tube and the perforated burner is located a diaphragm 14, which is suitably supported in position upon. the top of the walls of the well and is provided with perforations 15 which are located along the margin of its sides adjacent to the sides' of the well.

The top C or anchor member link of the clamp has depending walls 16 adapted in width and length to he teiescoped within the area impounded by the walls of the base and when said top is supported by its walls upon the bottom 5 of the base, there is formed. a combustion chamber D in the volume of which the annular space 3 is included and the top of which forms the thermal or heat conducting or heat defining Theside walls of theitop are each provided with vent ports 18, and. to deflect the escaping gases away from a tire or tube upon the thermal plate, said topisprovided at eachside Width an .up flared marginal.

' overhang 19;

Along each side of the'theri'nal plate 17 is formed a top recess or moisture supply reservoir 20 of suitable depth. From the under side of the thermal plate of the top Q depends also a vaporizer Efor water, comprising a drop tube or water reservoir 21 having a restricted opening 22 directly into one of the side recesses, While the opposite recess; 20 'is "connected to the. drop tube by means of a lateral duct 23, the outlet 24 of which equals the restricted area of the drop tube.. "Said drop tube is of a length to ex-v tend vthrough the'combustion chamber D,

thro'ughthe bottoml-fi of base A, and is' adapted to'serve' as means tdcbuple the base A and-the top G by being-extended through .a bo ed boss 25, integral with said base. which boss isprovided. with a winged set screw 96 adapted to impinge upon The. wall. vot the -.drop tube 'or stem when the latter is inflvarious adjusted positions within the bore through the boss. The adjustrricnt per-v nits notonly a change in the size of the combustion chamber and bringing of the heat conducting plate toward ora-way from the burner, but in opening up between the base A and anchormemben Got the vulcanizer support, may allow of draft regulation for theJ-burner. V 27 designates ba1l shaped longitudinally extending link clamp elements or arms. one

to each Sideottthe top G. The respective ends of the arms are pivotally secured to the 30 designates cross bars orclamp link eleu'ieuts, each having end bosses which are bored to receive the lateral portion'of the respective bail arms;- The bosses 31 of said balls are cut to form'a gap '32 of an area adapted to receive the slabbed portion 28 and when in poeitionupon the slabbed portion; the bar may bemoved to adjacent 0pposite and intact, portions oflbe arm and therebybe movably coupled tothe slabbed arm. The opposite bosses 33farc incut to form a gap 34 of a: width adapted to receive ute intact bail arm 27" with slight'pressure.

lLa c-h cross bar is also provided with a bored to movably receive the pressure bar F, Each central boss-3 5 provided with a lateral incut. 36 whlchextea the bore of the boss. In each ii'iVoiit is. located a locking clamp 37 each'iof Whiclris' movably attached to the respective boss. Said ratchet bars or locking clamps are drawable in the indirection by means of winged nuts 38, one of which 'is thread eoupled to each ratchet bar or locking .clampin position'to abut the respective side-of the1r-bosses oppo site to the incuts-36.

Each of the pressure :bars F comprises a casing 39, which is provided with. ratchet.

serrationsor teeth 40"into which the'respee tive ratchet bar 37 may be screw locked after vertical adjustment of thccasingjlVithin the bore of the casing is 'mov ably housed a stem l1 having a head 42 movable within the counterbore or. tube 43. The stem stud or element 41 is not necessarilyrotated by the screw 4'1? and is of 1a length to have its bot-torn portionextended beyond the casing when the head of the stud rests upon the bottom of 'the counter-bore."-

The counterbore of each casing is also threaded near its-top to receivethe pressure screw 3A which maybe brought to bear-upon.

the -head of the stud Hatter the leasing is adjusted and locked in the desired ,position.-

The container 4:51f0r the caloric or; fuel is coupled to the inlet port 7 by, means a- I pipe 46 and is provided with' a closure top 47-. 1

49 designates a pador porous vapor fusing permeable] heat confining bodjg, the.

body of which .is of an absorbent fabric,

such as asbestos, and is of-a sizeto cover fioo' the area of the top. Said'pad hasjacen- I tral bearing plate 50' adaptedito contact with the thermal plate and is provided \v-ith'aj cavity 51 more or less appronimatingla plane for thematerial of the patch previouslv cc-Q mented-in place at the placetqberepaired'and is shown as provided with an annular flange, 1n this instance shown as separate and tonn vulcanized, and saidhiizit bonductirig'i plate ing a flexible metallic-rim 52, which is yield-' able to the body of a tire or tube pressed.-

thereon. The capacity of the fuel container 1 is such, that its contents are exhausted jwhen,

the repair patch is thoroughly vulcanized to i the body ofthe tire ortube'and the capacity of water chamber isalso so fixed or. prede-.

; termined as to exhaust with, or more or less after the exhaust of the fuelsupplyf Y By thus proportioning the capacity. of thef- 7 respective reservoirs, a-tire or tube may be: repa red n patcheswithout liability of thesurrounding material being damaged by.

through the body, of the pad, undescepe along the margin of the top ensl'u'oud the central boss each of which is vertically: clamped portion of the tire or tube and per- Knit of only such portions of a tube or tire '1?o ;contact with. the thermal plate as is re- 55 which is interposed; between the sides of a tire G and -withplate 53 imposed thereon or to the toppressure'may be applied from the clamps without unduly distorting the body of the tread of a tire, said pressure beingtransmitted through the body of the side 56 of the tire G and the interposab'le .gblocik 55 to the side 54 of the tire, which is thereby pressed upon the thermal plate.

13y pivoting the arms to thebody of the top, pressure may be applied to a tire or tube at an angle to the top of the thermal plate to compensate for the side-wise inclined position of either the plate 53 or both the block 55 and the plate 53, which is im' parted to either, plate 53, or. block 55 and plate 53 by the crosswise taper of the body ofa tire. or tube, which is clamped upon the thermal plate of the vulcanizer. The pivotal'conneotion of the top bar t each-of the arms, and of the arms to the anchor element constitutes a series of three links of the clamp, which series is completedby the anchor clamp. element as the forth link. a

By providing a ratchet adjustment to the 1 pressure bars they may be rapidly adjusted to varying'thicknesseS of tires and tubes, and

thereby not only permitting the application of pressure by means of the, screws with a minimum of turns, but also facilitating the removal of a tubeor tire from the vulcanizer after a repair patch is vulcanized. For free initial setting, the pawl 37 is released, or the-sleeve F rotated to prevent cylindrical face or untoothed portion to the pawl. and the sleeve then forced to setting position, from which point the locked device may he acted upon by the rotary power applying clamp element 44. These clamp devices F are spaced from each other andindependently' adjustable, primarily by the ratchet mechanism and finally by the thumb screws.

As the clamp arms are= detachal'ily connectedby means of the crossbars, the placing in position of tire or tube upon the.thermal plate of my vulcanizer'and the removal therefrom is rapidly accomplished.-

lu the use of my vulcanizer, the water chamber is filled withwater, the fuel'reservoir is also filled. The pad is placed over the area of the heat conducting element or thermal plate, and the material which has received a patch, is placed adjacent the heat zone defining means as bounded by the heat confining device. The freeable ends of the cross bars are then connected to the respective arm and after adjusting thepressure ted to escape into. the well, which quantity is ignited, through a suitable opening, in a side or an end wall of the top, to'initially heat the vaporizing tube upon which its contents, replenishable from the fuel reservoir,- are permitted to escape as vapors through perforated burner tube. until the contentsof the reservoir are exhausted. Said escaping vapors are initially ignited by theexhausting starting flame in thefwell or may be ignited through the same opening. The.

burning vapors in the combustion chamber heat the thermal plate and by conduction effect the vulcanization .of the material of the patch to the damagedportion ofthe tirer The water in its reservoir is gradually evaporated to provide a wet ,steamshroudor' envelopfor the body of the tire or tubearound the portion to be vulcanized and protects a tire or tube against being burned in said sound portions.

This moisture had th I effect of preventing injury to the rubber of the tire being vulcanized'about the point of repair by reducing the temperature, in case for any reason the heat of theburner should become too great, but has been found to favorablyv a fleet the rubber at the point of -vulcanization in some way, the precise action to me.- a I After the patch material 15 vulcanized to of the moisture not being at .present known thebody of the tire or tube, which is accomplished when the fuel'supply is exhausted, and the vulcanizer has cooled, the tire or tube is removed from the vulcanizer by releasing of the screw pressureand detaching the bosses of the cross bars from the clamp arm 27 upon which the arm may be' swung apart and the tire or tube removed. But if .more patches are-needed uponthebody of the same tire or tube, the operation as above crvoir are filled and material for anothe patch is placed in the cavity of the 'ecntral pad plate without the tile or tube berng removed from the vulcanizcr by shifting in place the otherportion to be patched; and

.for the purposeof another or. more vulcanizations of the same tire or tube, the tire or tube, after the screw pressure-is relieved, the ratchet lock of the clamp bars are released to permit theitire being raisedv vertically a suitable distance for filling the water reser voir and supplying fuel, after which, the

described is rcpeated,the water and fuel res- I tire or tube is turned to locate another patched or cemented damaged portion over the heat zone defining means, and is then again clamped in positior -and the operation of vulcanizing is repeated.

The ratchet pressure bars F may be bodily detached from their bores in the cross bars and with saidcross arms uncoupled from the clamp arm 27', both arms may be folded upon the top of the thermal plate to reduce thevulcanizer into. a compact package with the fuel reservoir and its. outlet pipe turned to locate the reservoir along the respective "side of the base. I

Iii-the modification shown in Fig. 6, the water chamber and the fuel chamber are omitted. A sufficient quantity of fuel is placed in the Well, being held therein by an absorbent material, packed in the area of the well, and the wet steam for the protecting envelop for a tube or tire is provided by water absorbed by dipping of the body of the pad or saturating it in place upon the vulcanizer thermal plate.

In the modification shown in Fig. 16, the top 56 isprovided with integral water chambers 57, having openings 58 adapted to feed a pad imposed upon the thermal plate 59 and in the modification shown'in Fig. 17 the thermal plate" is provided with droptube,

to locate therespeotive lateral connecting bar ofeach bail above the respective side of the body and parallel therewith. a pair of cross bars pivoted to one of the bails and movable lengthwise thereon adapted to detachably'eiigage the lateral bar of the opposite bail, and means depending from each cross arm adaptedto be brought to bear upon the thermal plate. I

2. A vulcanizer comprising a body having an internal combustion chamber, there being a cavity for the material for a patch over thecombu stio n chamber, a burner and a fuel reservoir pipe connected to said burner and provided with .a controlling valve, clamping means comprising a bail pivoted'to each side of the body and one or more cross-bars movable upon the lateral bar of the respective bail, eachcross-bar having an end pivotally coupled to the lat eral arm of one of the bails and the opposite end detachably coupled to the lateral arm of the opposite bail. pre ssure'meaus depending from each cross-bar toward the top of the combustion chamber comprising an upward lockable ratchet sleeve,a top headed stem movable ivithiiithe bore of the sleeve, and a pressure screw bearable upon the head of the stem; v g

3'. A vuleanizer comprising an Iincloscd combustion chamber provided with means for generating heat, supplementary top imposable over the combustion chamber, said top hav ng a metallic container. for

the material for apatch and havingdnherent interstices for the diffusion of 'v'awith outlet ports to the diffusing body of pors, a water container depending from i the top of the coii'ibustionchamber provided j the supplementary top to supply it. with water vapors, and means to releasably clamp a tube or a tire to the top of the combustion chamber. "1

4. A vulcanizer comprising a hollow body having a top section and a bottom section adapted to conjointlyform' a combustion chamber, said bottom section beingiadap ted to contain a fixed quantity of heating means, a container for \vaten depending into the combustion chamber from the underside'of the top section provided with top outlets for the generated vaors of'water, a container for the materia for afpatch, means adapted to restrictively difiuse'and vent the vapors of water along the margin of the'top, and means to elamp a tubeo'r tire over the patch container, E 5. A v tlcanizer comprising a body pro vided with a combustion chamber .and a container for a fixed quantity of heating means, a top over'the combustion chamber liavinga central container for the ,material for 'a'patcli and'havi'ng body compo e of a nonconducting material but a'dapted'to diffuse and permit the discharge of vapors of water supplied thereto,- a container afor vater extending into the combustioncham-q her having ports to feed the difiusingjmai; te'rial of the top, and means iadapted'to; press a tube or a tire'uponthe top and plate to distribute applied pressure over thiebody of the tife. 6. A vulcanizer. comprising a heatable; body provided with heating-.mea is and a-- cavity for the material for a patch, bail---- like clamp bars arranged one to each side of the hodyof the vulcanizer and-pivoted thereto, one or more crossbars 'p votally.

and movably attached to one bail and dc:

tachably coupled to the other bail to"per--;

mit of folding the bails iipon the bodyof the vulcanizer, an :pressure means removable from the cross connecting bars of the bails; D

7. A knock-down vulcanizer CUIH DIZlSEDg; a member embodying heat-zone-oet n ng Dimtafiy mmmte (m the mai eriai be vulcanized into posit-i012 iv tw-vzu'd mail] when adjmer 1 zznnwdefining means! imaging zm'a.n:,-. mm"; 9. A vulcumzm' unmodying an anchor 02w 21w nmtm' m 31: nwmher mu of links connected to the Mom adjacent next niwmlvur, a t vrci link connecting said pair 20 of finks, saki iahrce links rockable. as to the 5310i .mizmbcr. and, an adjustrole clamp- V ing manna mmmicd upnn the interpmdiate .21: :uwmbank to 4:1 pm? :fl: differfint vngles the anchor QIii' fix zmufljm.

JAMES a BANGRUFT.

- mum-Ln g;

0 find haw. the m L101: zz-T h 50M. uh iflfitflbifi 0km; 521g 7119:1215; M. K. TERRY", Hm: wnnociinp; Fink: S10 Eon-e 1*. C. WIRTH. 

